#ifndef INTEGERS_H_
#define INTEGERS_H_
typedef enum {POSITIVE = 0, NEGATIVE = 1} Sign;
Sign other(Sign sign);
typedef unsigned long long int Integer;
Integer gcd(Integer a, Integer b);	//Finds Greatest Common Divisor of a and b;
Integer lcm(Integer a, Integer b);	//Finds Least Common Multiple of a and b
	
#endif /*INTEGERS_H_*/
